DAY 53 OF 90 · Loops inside loops

Any twins

Medium90 Days of Looping

Inputs

values is a list of 0 to 12 whole numbers, each from 0 to 30.

Your tasks

Use an outer loop over each position i, and an inner loop over each later position j.
If values[i] equals values[j], return true straight away.
If both loops finish, return false.
Complete hasTwins so it returns true or false. Return it, do not print it.

Example

With values = [4, 9, 2, 9], hasTwins returns true.

Rules

Do not turn the list into a set.

Test data

TEST DATA 1: values is [4, 9, 2, 9]

TEST DATA 2: values is [1, 2, 3]

Practice focus

Nested loops compare every pair and build rows. The slow, simple answer to most problems is two loops. Knowing it is what lets you see how to beat it.

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